Pets and Poison—The Hidden Dangers of Chocolate
- Practice manager
- Mar 27
- 2 min read

Chocolate is a beloved treat for humans, but for our pets, it can be highly toxic and potentially fatal. Many pet parents are unaware of just how dangerous chocolate can be for dogs, cats and other animals. Understanding why chocolate is harmful and what to do in case of accidental ingestion can help keep your furbabies safe.
Why is Chocolate Poisonous to Pets?
Chocolate contains two toxic compounds for pets: theobromine and caffeine. While humans can metabolise these substances quickly, pets—especially dogs—process them much more slowly, leading to toxic effects. The darker and more concentrated the chocolate, the more dangerous it is.
Types of Chocolate and Toxicity Levels
The toxicity of chocolate depends on the type and the amount ingested. Here’s a general breakdown:
Cocoa powder and baking chocolate – The most toxic, containing the highest levels of theobromine.
Dark chocolate – More dangerous than milk chocolate but less toxic than cocoa powder.
Milk chocolate – Contains less theobromine but can still be harmful in large quantities.
White chocolate – Has very low theobromine levels but can still cause issues due to fat and sugar content.

Signs of Chocolate Poisoning in Pets
Symptoms of chocolate poisoning usually appear within 6-12 hours of ingestion and can last up to 72 hours. These symptoms may include:
Vomiting and diarrhoea
Restlessness or hyperactivity
Rapid breathing or panting
Increased heart rate
Tremors or muscle twitching
Seizures
Collapse or coma in severe cases
What About Cats?
While cats are also sensitive to theobromine, they are less likely to eat chocolate because they lack a strong preference for sweet foods. However, any chocolate ingestion in cats should still be treated as an emergency.
What to Do If Your Pet Eats Chocolate
If you suspect your pet has eaten chocolate, take action immediately:
Seek immediate veterinary attention or call the Animal Poisons Centre on 1300 869 738 for advice.
Note the type and amount of chocolate consumed to help our vets assess the risk.
Do not wait for symptoms to appear. The earlier treatment is started, the better the outcome.

Preventing Chocolate Poisoning
Keep chocolate out of reach. Store it in high, closed cupboards where pets can’t access it.
Be cautious during holidays. Easter, Christmas and Halloween often lead to an increase in pet chocolate poisoning cases.
Educate family members. Ensure children and visitors understand not to feed chocolate to pets.
Choose pet-safe treats. If you want to spoil your pet, opt for dog-friendly carob treats instead.
Final Thoughts
While chocolate is a delicious indulgence for humans, it can be deadly for pets. By taking precautions and acting quickly in case of ingestion, you can help protect your pet from chocolate poisoning.
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